Whats the difference between a cluster headache and other types of headache?
Cluster headaches do have specific symptoms that make them distinct from other types of headaches such as migraines or tension headaches. Cluster headaches always cause pain on one side of the head, usually centred around your eye, together with a running or redness of the eye with or without a running nose. The episodes are remarkably similar each time and can wake you at night, often at exactly the same time. They can occur many times in a week or month, hence the term cluster, and then disappear for months or even years. Another key feature of a cluster headache is a sense of restlessness and agitation during an attack.